Comments about "Compton_scattering" in Wikipedia

This document contains comments about the article "Compton_scattering" in Wikipedia
In the last paragraph I explain my own opinion.



The article starts with the following sentence.

1. Introduction

The effect is significant because it demonstrates that light cannot be explained purely as a wave phenomenon.
The effect implies that light has energy, and should be treated as such. IMO implying that light has mass.

2 Description of the phenomenon

2.1 Derivation of the scattering formula

Before the scattering event, the electron is treated as sufficiently close to being at rest that its total energy consists entirely of the mass-energy equivalence of its rest mass me:
Ee = me*c^2.
This is a very strange formula. IMO you can only use this formula when a particle has the speed of light.
IMO the following formula makes more sense:
Ee = me0*c^2 = me*v^2
After scattering, the possibility that the electron might be accelerated to a significant fraction of the speed of light, requires that its total energy be represented using the relativistic energy–momentum relation:
Ee' = sqrt { (pe'*c)^2 + (me*c^2)^2 }.
IMO in some sense you should always use such type of equation to explain each type of collision. The reverse can also happen.

3. Applications

3.1 Compton scattering

3.2 Magnetic Compton scattering

3.3 Inverse Compton scattering

4. See also

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Created: 2 February 2017

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